I ask only once a year: please help the Internet Archive today. Most can’t afford to give, but we hope you can. The average donation is $45. If everyone chips in $5, we can end this fundraiser today. Right now, a generous supporter will match your donation 2-to-1, so you can triple your impact. All we need is the price of a paperback book to sustain a library you can trust. We have only 150 staff but run one of the world’s top websites. We’re dedicated to reader privacy so we never track you. We never accept ads. But we still need to pay for servers and staff. For 22 years, my dream has been to build the library of everything and make it available to everyone. To make information more reliable and permanent. I know we could charge money, but then we couldn’t achieve our mission: a free library for the whole internet. The Internet Archive is a bargain, but we need your help. If you find our site useful, please chip in. Thank you.
—Brewster Kahle, Founder, Internet Archive

I ask only once a year: please help the Internet Archive today. The average donation is $45. If everyone chips in $5, we can end this fundraiser today. Right now, your donation will be matched, doubling your impact! All we need is the price of a paperback book to sustain a library the whole world trusts. We’re dedicated to reader privacy so we never track you. We never accept ads. But we still need to pay for servers and staff. For 22 years, my dream has been to build the library of everything and make it available to everyone. I know we could charge money, but then we couldn’t achieve our mission. The Internet Archive is a bargain, but we need your help. If you find our site useful, please chip in. Thank you.
—Brewster Kahle, Founder, Internet Archive

I ask only once a year: please help the Internet Archive today. The average donation is $45. If everyone chips in $5, we can end this fundraiser today. Right now, your donation will be matched, doubling your impact! All we need is the price of a paperback book to sustain a library the whole world trusts. We’re dedicated to reader privacy so we never track you. We never accept ads. But we still need to pay for servers and staff. For 22 years, my dream has been to build the library of everything and make it available to everyone. I know we could charge money, but then we couldn’t achieve our mission. The Internet Archive is a bargain, but we need your help. If you find our site useful, please chip in. Thank you.
—Brewster Kahle, Founder, Internet Archive

I ask only once a year: please help the Internet Archive today. The average donation is $45. If everyone chips in $5, we can end this fundraiser today. Right now, your donation will be matched 2-to-1, tripling your impact! All we need is the price of a paperback book to sustain a library the whole world trusts. We have only 150 staff but run one of the world’s top websites. We’re dedicated to reader privacy. We never accept ads. But we still need to pay for servers and staff. The Internet Archive is a bargain, but we need your help. If you find our site useful, please chip in.
—Brewster Kahle, Founder, Internet Archive

Understanding the particle-scale transition from elastic deformation to plastic flow is central to making predictions about the bulk material properties and response of disordered materials. To address this issue, we perform experiments on flow-stabilized solids composed of micron-scale spheres within a microfluidic channel, in a regime where particle inertia is negligible. Each solid heap exists within a stress gradient imposed by the flow, and we track the positions of particles in response to single impulses of fluid-driven compression or decompression. We find that the resulting deformation field is well-decomposed into an affine field, with a constant strain profile throughout the solid, and a non-affine field. The magnitude of this non-affine response decays with the distance from the free surface in the long-time limit, suggesting that the distance from jamming plays a significant role in controlling the length scale of plastic flow. Finally, we observe that compressive pulses create more rearrangements than decompressive pulses, an effect that we quantify using the $D^2_\mathrm{min}$ statistic for non-affine motion. Unexpectedly, the time scale for the compression response is shorter than for decompression at the same strain (but unequal pressure), providing insight into the coupling between deformation and cage-breaking.